Handle nested position:sticky elements correctly (compositor)

third_party/WebKit/LayoutTests/compositing/overflow/composited-nested-sticky-inline-expected.html

Index: third_party/WebKit/LayoutTests/compositing/overflow/composited-nested-sticky-inline-expected.html
diff --git a/third_party/WebKit/LayoutTests/compositing/overflow/composited-nested-sticky-inline-expected.html b/third_party/WebKit/LayoutTests/compositing/overflow/composited-nested-sticky-inline-expected.html
new file mode 100644
index 0000000000000000000000000000000000000000..3fcb83e50320d9dadf415e9b2fbd3b46f98e5562
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/compositing/overflow/composited-nested-sticky-inline-expected.html
@@ -0,0 +1,41 @@
+<style>
+body {
+  margin: 0;
+}
+
+.scroller {
+  overflow: auto;
+  width: 200px;
+  height: 350px;
+  outline: 2px solid black;
+}
+
+.container {
+  width: 200px;
+  height: 700px;
+}
+
+.outerInline {
+  display: inline;
+  position: relative;
+  top: 200;
+}
+
+.innerInline {
+  display: inline;
+  position: relative;
+  top: 25px;
+}
+</style>
+
+<script>
+window.addEventListener('load', function() {
+  document.querySelector('.scroller').scrollTop = 200;
+});
+</script>
+
+<div class="scroller">
+  <div class="container">
+    <div class="outerInline">1<div class="innerInline">2</div></div>
+  </div>
+</div>